The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 2006
Filed:
Jun. 21, 2002
Ken'ichi Kasazumi, Takatsuki, JP;
Yasuo Kitaoka, Ibaraki, JP;
Tosifumi Yokoyama, Katano, JP;
Kiminori Mizuuchi, Neyagawa, JP;
Kazuhisa Yamamoto, Takatsuki, JP;
Hisashi Senga, Neyagawa, JP;
Shigeru Furumiya, Himeji, JP;
Hiromichi Ishibashi, Ibaraki, JP;
Ken'ichi Kasazumi, Takatsuki, JP;
Yasuo Kitaoka, Ibaraki, JP;
Tosifumi Yokoyama, Katano, JP;
Kiminori Mizuuchi, Neyagawa, JP;
Kazuhisa Yamamoto, Takatsuki, JP;
Hisashi Senga, Neyagawa, JP;
Shigeru Furumiya, Himeji, JP;
Hiromichi Ishibashi, Ibaraki, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A light source device can attain a stable output of a harmonic even when there occurs a change in the ambient temperature or fluctuation in the output power. The light source device is provided with a semiconductor laser source (), an optical waveguide-type QPM-SHG device () for generating a second harmonic from light emitted from the semiconductor laser source (), a wavelength control means () for controlling a wavelength of light emitted from the semiconductor laser source (), a means for slightly fluctuating wavelength () for changing a wavelength of light emitted from the semiconductor laser source () and a means for detecting a change in output light power of the optical waveguide-type QPM-SHG device () that occurs when a wavelength of light emitted from the semiconductor laser source () is changed. In this case, a wavelength of light emitted from the semiconductor laser source () is controlled to an optimum wavelength of the optical waveguide-type QPM-SHG device () based on a change in output light power of the optical waveguide-type QPM-SHG device () that occurs when a wavelength of light emitted from the semiconductor laser source () is changed.